1、 IEC 61300-3-28 Edition 2.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-28: Examinations and measurements Transient loss Dispositifs dinterconnexion et composants passifs fibres optiques M
2、thodes fondamentales dessais et de mesures Partie 3-28: Examens et mesures Perte transitoire IEC61300-3-28:2012 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2012 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized i
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16、u si vous avez des questions contactez-nous: csciec.ch. IEC 61300-3-28 Edition 2.0 2012-03 INTERNATIONAL STANDARD NORME INTERNATIONALE Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-28: Examinations and measurements Transient loss Dispositifs
17、dinterconnexion et composants passifs fibres optiques Mthodes fondamentales dessais et de mesures Partie 3-28: Examens et mesures Perte transitoire INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE M ICS 33.180.20 PRICE CODE CODE PRIX ISBN 978-2-88912-933-1 Registe
18、red trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distribute
19、ur agr. 2 61300-3-28 IEC:2012 CONTENTS FOREWORD . 3 1 Scope . 5 2 Normative references . 5 3 Precautions 5 4 Apparatus . 6 4.1 General description . 6 4.2 Launch conditions and source (S) . 6 4.3 Optical detector (D) . 7 4.4 Data acquisition system (DAS) 8 4.5 Temporary joint (TJ) 8 4.6 Fibre . 8 4.
20、7 Mode filter (mf) 8 5 Procedure 9 5.1 Pre-conditioning 9 5.2 Visual inspection . 9 5.3 Transient loss measurements 9 6 Details to be specified 11 Annex A (informative) Minimum characteristics for analogue-to-digital converter . 12 Bibliography 13 Figure 1 Transient loss measurement set-up 6 Figure
21、2 Transient loss measurement 10 Figure 3 Example of a transient loss measurement with oscilloscope . 10 Figure A.1 Typical apparatus for measurement 12 Table 1 Preferred source . 7 Table 2 Preferred optical detector parameters . 7 61300-3-28 IEC:2012 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ FIB
22、RE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TEST AND MEASUREMENT PROCEDURES Part 3-28: Examinations and measurements Transient loss FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnic
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32、ublication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or al
33、l such patent rights. International Standard IEC 61300-3-28 has been prepared by subcommittee 86B: Fibre optic interconnecting devices and passive components of IEC technical committee 86: Fibre optics. This second edition cancels and replaces the first edition published in 2002. It constitutes a te
34、chnical revision. Changes from the previous edition of the document are to update the test method and to reconsider the requirements. 4 61300-3-28 IEC:2012 The text of this standard is based on the following documents: FDIS Report on voting 86B/3334/FDIS 86B/3388/RVD Full information on the voting f
35、or the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. The committee has decided that the contents of this publication will remain unchanged until the stability date indi
36、cated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. 61300-3-28 IEC:2012 5 FIBRE OPTIC INTERCONNECTING DEVICES AND PASSIVE COMPONENTS BASIC TES
37、T AND MEASUREMENT PROCEDURES Part 3-28: Examinations and measurements Transient loss 1 Scope This part of IEC 61300 describes methods to measure fast variation of attenuation due to mechanical stresses applied on optical fibres and passive optical components during their lifetime. Transient loss mea
38、surement shows the effect of fast mechanical disturbances on fibres. These disturbances can be due to several types of action on the device under test (DUT), such as: dropping, vibration, bumping or manipulation of the fibres. Therefore this measurement will usually be performed on devices exposed t
39、o mechanical tests. This method is not designed to measure very fast transient losses (with duration less than 1 ms) that could affect the performance of transmission systems. It is optimised to detect transient losses caused by mechanical stresses due to the tests prescribed in the component perfor
40、mance standards, whose duration is generally longer than several tens of milliseconds. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For
41、 undated references, the latest edition of the referenced document (including any amendments) applies. IEC 61300-1:2011, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 1: General and guidance IEC 61300-3-1, Fibre optic interconnecting devices an
42、d passive components Basic test and measurement procedures Part 3-1: Examinations and measurements Visual examination IEC 61300-3-35, Fibre optic interconnecting devices and passive components Basic test and measurement procedures Part 3-35: Examinations and measurements Fibre optic connector endfac
43、e visual and automatic inspection IEC 60825-1, Safety of laser products Part 1: Equipment classification and requirements 3 Precautions The power in the fibre shall not be at a level high enough to generate non-linear scattering effects. The position of the fibres between the measurement equipment a
44、nd the DUT should be fixed during the measurements to avoid changes in attenuation due to bending loss. The safety recommendations in IEC 60825-1 shall be followed. 6 61300-3-28 IEC:2012 4 Apparatus 4.1 General description The test equipment requires a fast optical detector with an analogue electric
45、al output in order to detect loss variations of duration in the range from the millisecond to several seconds. In cases where transient losses less than 0,5 ms need to be measured the equipment must be able to sample at twice the expected transient speed / frequency. The measurement set-up is shown
46、in Figure 1. mf TJ DUT S D mf DAS IEC 217/12 Key S Source TJ Temporary joint DUT Device Under Test D Optical detector DAS Data acquisition system mf Mode filter Figure 1 Transient loss measurement set-up 4.2 Launch conditions and source (S) The launch condition shall be specified in accordance with
47、Clause 9 of IEC 61300-1:2011. The source unit consists of an optical emitter, the associated drive electronics and fibre pigtail (if any). Preferred source conditions are given in Table 1. Preferably unpolarized light shall be used. The optical source shall be continuous wave (CW) or shall have a hi
48、gh frequency modulation in order to detect transient losses of 0,5 ms. 61300-3-28 IEC:2012 7 Table 1 Preferred source No. Type Centre wavelength Nm Source type S1 Multi-mode 660 30 LED S2 Multi-mode 740 30 LED S3 Multi-mode 850 30 Monochromator or LED S4 Multi-mode 1 300 30 Monochromator or LED S5 S
49、ingle-mode 1 310 30 Laser diode, monochromator or LED S6 Single-mode 1 550 30 Laser diode, monochromator or LED S7 Single-mode 1 625 30 Laser diode, monochromator or LED NOTE 1 It is recognized that CWDM and DWDM components may require the use of other source types such as tuneable lasers. It is therefore recommended in these cases that the preferred source character
